Dobby hook



Patented Feb. 13,1923,

EPPA Rayon, or WALTHAM, massaonosnrars, 'ass olvoe T onomr'ron & KNOWLES I LOOM worms, or WORCESTER, MASSACHUSETTS, A CORPORATION or MASSA- CHUSETTS.

Application filed May 2'2,

This invention relates to a (lobby hook of the general type that 13 used in large numbers inloom (lobbies. These hooks are .pivotally connected to the opposite ends of (lobby levers and the free ends of the hooks are selectively raised or lowered to form counections forthe associated (lobby levers with actuating members or knife bars.

'hIy invention relates to improvements in features of construction of such dobby hooks, whichwill be hereinafter described andmore particularly pointed out in the appended claims.

A preferred form of the invention. is shownin the drawings in which Fig; 1 is a side elevation of pair of hooks and-certain associated parts;

Fig. 2 is an enlargedside elevation of a dobby' lever and hook;

Fig. 3 is a sectional elevation, taken along 'theline 3-3 in Fig. 1;

Fig. 4 is an end elevation, looking in the direction of the arrow 4 in Fig. 9,;

Fig. dis a sectional plan view, taken along the line 5-5 in Fig. 2;

Fig. (3 is a plan view of two adjacent (lobby hooks and levers, and Fig. '7 is a sectional elevation, taken along y the line 7-7 in Fig. 6.

to its opposite ends.

Referring to the-drawings'l have shown a dobby lever 10 pivoted at 11 onthe usual jack 12 and having an upper dobhy hook 13. and 'alower hook it pivotally connected is positioned by a litter rod 15 which in turn rests on an indicator lever or finger 16.

The lower hook '14. is. directly "engagedby another indicating lever or finger 17. :The 'rod15 is preferably formed of wire of relatively smalldiameter and the. upper end thereof may have a U-shaped return bend.

i as shown-in Fig. 3-, thus providing a broad contact surface for the book 13.

I The dobby lever-.10 may be of any usual construction and is showu'herein as formed of two pieces of sheet metal riveted together at 18 and'19 andhav-ing suflicie-nt resiliency so that'th nds maybe sprezuliapart to admit The upper hook 13 DOBBY HOOK.

E p, 1922. Serial No. 562,575.

the bearing lugs 20 (Fig. 5) of the lovers 13 or'14: I

The details of this lever need. not be further described as they form the subject of a copending application, Serial No. 510,-

' 842 filed October '27, 1921, by Elbridge R.

Holmes. j

The dobby hooks 13 and let are reduced in thickness to flat vertical webs at their pivoted ends, as indicated in Fig. 5 and the bearing lugs 20 on each side of the reduced web are preferably formed integral therewith.

The remaining portion of each hook .is of the substantially triangular cross section indicated particularly in Figs. 3 and 'i'. This construction. ot the hooks possesses numerous important advantages. In the first place, the total weight of the hook is not increased over that of the ordinary hook having a thin flat vertical section. The triangular section, however, without increasing the weight, provides a bearing surface of substantially double the width for the lifter rods 15, a s indicated in Fig. 3, or for the fingers 17 which engages directly with the lower hooks; I v

This triangular section also provides a lower face for the book which is of substan- I, tially the same width as the over-all lei'igth of the bearing lugs 20 or thetotal thickness of the levers 10. The advantages of this feature are indicated in Figs. 6 and 7 which show that the levers 10 a're laterally positioned by the edges of these triangular hooks and that the ends of the levers arethus pie vented from overlapping and catching on each other in the operation of the dobby.-

larly well adapted for manufacture lay/drop forging operations. g s

Havingthus described my invention and the advantages "thereof, I: do not. h ltobe limited to the'details herein disclosed otherwise than as set forth in the claims but what IClftlID lSPw- J 1'. A dobby hook having its. ody portion of substantially triangula iicross section with a relatively-broadfia't lower face; 2. A (lobby hook having a hook member at one end and'ha-ving the other end-of reduced 1 thickness with integral. bearing lugs projec ving from each side thereof, the body portion Q i v I 44341 of SilidilOOk being of subs tantialiji triangu 1:11- (POSS section with a broad flat lowlr fi-ici 3.v A (lobby hook having a hook member at one endan d having thq other end of 1'e-" triangnlnif (m ss section and having its lower face of :1 Width as great the fiver-all lngth of said bear-mgr hugs. i 10 In testimony whereof I vhave. hreunto ufiixeii my signature.

. EPPA H. RYO 

